(3x^2+2x+1)+(3x-8)-(x^2+6x-5)=

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Solution for (3x^2+2x+1)+(3x-8)-(x^2+6x-5)= equation:


Simplifying
(3x2 + 2x + 1) + (3x + -8) + -1(x2 + 6x + -5) = 0

Reorder the terms:
(1 + 2x + 3x2) + (3x + -8) + -1(x2 + 6x + -5) = 0

Remove parenthesis around (1 + 2x + 3x2)
1 + 2x + 3x2 + (3x + -8) + -1(x2 + 6x + -5) = 0

Reorder the terms:
1 + 2x + 3x2 + (-8 + 3x) + -1(x2 + 6x + -5) = 0

Remove parenthesis around (-8 + 3x)
1 + 2x + 3x2 + -8 + 3x + -1(x2 + 6x + -5) = 0

Reorder the terms:
1 + 2x + 3x2 + -8 + 3x + -1(-5 + 6x + x2) = 0
1 + 2x + 3x2 + -8 + 3x + (-5 * -1 + 6x * -1 + x2 * -1) = 0
1 + 2x + 3x2 + -8 + 3x + (5 + -6x + -1x2) = 0

Reorder the terms:
1 + -8 + 5 + 2x + 3x + -6x + 3x2 + -1x2 = 0

Combine like terms: 1 + -8 = -7
-7 + 5 + 2x + 3x + -6x + 3x2 + -1x2 = 0

Combine like terms: -7 + 5 = -2
-2 + 2x + 3x + -6x + 3x2 + -1x2 = 0

Combine like terms: 2x + 3x = 5x
-2 + 5x + -6x + 3x2 + -1x2 = 0

Combine like terms: 5x + -6x = -1x
-2 + -1x + 3x2 + -1x2 = 0

Combine like terms: 3x2 + -1x2 = 2x2
-2 + -1x + 2x2 = 0

Solving
-2 + -1x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-1 + -0.5x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.5x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.5x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.5x + x2 = 0 + 1
-0.5x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.5x + x2 = 1

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 1 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 1 + 0.0625

Combine like terms: 1 + 0.0625 = 1.0625
0.0625 + -0.5x + x2 = 1.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(x + -0.25) equal to 1.030776406 and -1.030776406.

Subproblem 1

x + -0.25 = 1.030776406 Simplifying x + -0.25 = 1.030776406 Reorder the terms: -0.25 + x = 1.030776406 Solving -0.25 + x = 1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.030776406 + 0.25 x = 1.030776406 + 0.25 Combine like terms: 1.030776406 + 0.25 = 1.280776406 x = 1.280776406 Simplifying x = 1.280776406

Subproblem 2

x + -0.25 = -1.030776406 Simplifying x + -0.25 = -1.030776406 Reorder the terms: -0.25 + x = -1.030776406 Solving -0.25 + x = -1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.030776406 + 0.25 x = -1.030776406 + 0.25 Combine like terms: -1.030776406 + 0.25 = -0.780776406 x = -0.780776406 Simplifying x = -0.780776406

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.280776406, -0.780776406}

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